"Annual mean concentrations of air pollutants in urban areas"
Indexed trend in annual mean urban air quality over the period 1997-2008 (reference year 1997). All urban and suburban background stations operational (that is at least reporting over 9 years with a yearly coverage of at least 274 days) during the period 1997-2008 are included. A general, Europe-wide averaged picture is shown, with a bias towards regions with high station density.

If you're a meat eater, consider reducing your meat consumption and going for quality rather than quantity. Production of meat consumes enormous amounts of energy, not only for the growth and transport of animal feed, but also for the heating, air conditioning, and lighting of the immense animal farms. Changing to a diet with less meat helps the environment, but is also good for your health. It is best to buy meat from local producers and buy organic too.
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